The strange big-eared brown bat (''Histiotus alienus''), is a

bat Bats are flying mammals of the order Chiroptera (). With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more agile in flight than most birds, flying with their very long spread-out ...

species found in

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

. Originally described from a bat collected in 1916, a second specimen was obtained in 2018.

References

Histiotus Taxa named by Oldfield Thomas Bats of South America Mammals described in 1916 {{Vespertilionidae-stub